Amateur talking pictures and recording (1933)

Page scan 000157 from Amateur talking pictures and recording

Record Details:

Title:
Amateur talking pictures and recording
Date:
1933
Publisher:
London : Sir Isaac Pitman & Sons, Ltd.
Volume:
Amateur talking pictures and recording
Leaf #:
000157
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
May 02, 2024
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SOUND-ON-FILM EQUIPMENT 145 speech current from the photo-electric cell which is of necessity associated with the projector is of such small value that a long lead cannot be entertained. This means that we must have the first valve close to the photo-electric cell, as otherwise we shall very likely pick up interference. Naturally, therefore, for portable equipment, if we must have one valve Fig. 70. R.C.A. 16 mm. Portable Sound-on-Film Equipment close to the projector, we might just as well place the remainder there. The projector itself, shown in Fig. 71, is neat and compact as might have been expected from the size of the carrying case. Let us trace the film from the feed reel to the take-up reel which it will be noted are attached outside the carrying case. The projector is not removed from its case during entertainment, one side being open for threading, after which it is closed again to reduce projector noise. From the feed reel the film passes through a slot in the side of the cabinet to the feed sprocket, and thence through t lie usual film gate at the back of the optical system. Below the top film loop